Diagnostic strategy of metagenomic next-generation sequencing for gram negative bacteria in respiratory infections

被引：3

作者：

Liang, Wenyan ^{[1
]}

Zhang, Qun ^{[1
]}

Qian, Qian ^{[2
]}

Wang, Mingyue ^{[1
]}

Ding, Yuchen ^{[1
]}

Zhou, Ji ^{[1
]}

Zhu, Yi ^{[1
]}

Jin, Yu ^{[1
]}

Chen, Xuesong ^{[1
]}

Kong, Hui ^{[1
]}

Song, Wei ^{[1
]}

Lu, Xin ^{[3
]}

Wu, Xiaodong ^{[4
]}

Xu, Xiaoyong ^{[5
]}

Dai, Shanling ^{[1
]}

Sun, Wenkui ^{[1
]}

机构：

[1] Nanjing Med Univ, Affiliated Hosp 1, Dept Respirol & Crit Care Med, Nanjing 210029, Peoples R China

[2] Jiangsu Hlth Vocat Coll, Nanjing 211800, Peoples R China

[3] Nanjing Med Univ, Affiliated Jiangning Hosp, Dept Resp & Crit Care Med, Nanjing, Peoples R China

[4] Tongji Univ, Shanghai East Hosp, Dept Resp & Crit Care Med, Shanghai, Peoples R China

[5] Nanjing Univ Chinese Med, Affiliated Hosp 2, Dept Resp & Crit Care Med, Nanjing 210000, Jiangsu, Peoples R China

来源：

ANNALS OF CLINICAL MICROBIOLOGY AND ANTIMICROBIALS | 2024年 / 23卷 / 01期

关键词：

Metagenomic next-generation sequencing; Gram-negative bacteria; Interpretational approaches; Diagnostic accuracy; COMMUNITY-ACQUIRED PNEUMONIA;

D O I：

10.1186/s12941-024-00670-x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

ObjectiveThis study aims to identify the most effective diagnostic method for distinguishing pathogenic and non-pathogenic Gram-negative bacteria (GNB) in suspected pneumonia cases using metagenomic next-generation sequencing (mNGS) on bronchoalveolar lavage fluid (BALF) samples.MethodsThe effectiveness of mNGS was assessed on BALF samples collected from 583 patients, and the results were compared with those from microbiological culture and final clinical diagnosis. Three interpretational approaches were evaluated for diagnostic accuracy.ResultsmNGS outperformed culture significantly. Among the interpretational approaches, Clinical Interpretation (CI) demonstrated the best diagnostic performance with a sensitivity of 87.3%, specificity of 100%, positive predictive value of 100%, and negative predictive value of 98.3%. CI's specificity was significantly higher than Simple Interpretation (SI) at 37.9%. Additionally, CI excluded some microorganisms identified as putative pathogens by SI, including Haemophilus parainfluenzae, Haemophilus parahaemolyticus, and Klebsiella aerogenes.ConclusionProper interpretation of mNGS data is crucial for accurately diagnosing respiratory infections caused by GNB. CI is recommended for this purpose.

引用

页数：7

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